Thermal Overload Relay
JR29(T)

JR29(T)

Model Reference

thermal-relay-t25T25
thermal-relay-t45T45
thermal-relay-t370T370
    thermal-relay-t-code

Application

  • JR29(T) series thermal overload relay is mainly suitable for A.C.electric power system with volt-age up to 660V, current up to 500A, 50/60Hz. It is generally used for the protection of overloadand phase-lacking in circuits with three-phase induce motors and is often made up electromag-netic starters with CJX8(B) series A.C. contactors. The product conforms to IEC60947-4-1 stardand.
  • Noter: JR29-16(T16) is manually reset, automatic to the other.

Motion Characteristic: Three-phase Balance Motion Time

No Times of the setting current Motion time Start condition Ambient temperature
1 1.05 >2h Cold state 20±5oC
2 1.2 <2h Heat state (Following the No.1 test)
3 1.5 <4min
4 7.2 10A 2s<Tp≤10s ≤63A Cold state
10 4s<Tp≤10s >63A

Phase-losing Motion Characteristic

No Times of the setting current Motion time Start condition Ambient temperature
Any two phases Another phase
1 1.0 0.9 >2h Cold state 20±5oC
2 1.15 0 <2h Heat state(Following the No.1 test)

Technical Data

Type Setting Range(A) Applied Contactor
JR29-16
(T16)
0.11~0.16 B9
B16
0.14~0.21
0.19~0.29
0.27~0.4
0.35~0.52
0.42~0.63
0.55~0.83
0.7~10.
0.9~1.3
1.1~1.5
1.3~1.8
1.5~2.1
1.7~2.4
2.1~3
2.7~4
3.4~4.5
4~6
5.2~7.5
6.3~9
7.5~11
9~13
12~17.6
Type Setting Range(A) Applied Contactor
JR29-25
(T25)
0.1~0.16 B25
B30
0.16~0.25
0.25~0.4
0.4~0.63
0.63~1
1~1.4
1.3~1.8
1.7~2.4
2.2~3.1
2.8~4
3.5~5
4.5~6.5
6~8.5
7.5~11
10~14
13~19
18~25
24~32
Type Setting Range(A) Applied Contactor
JR29-45
(T45)
0.28~4 B37
B45
0.35~0.52
0.45~0.63
0.55~0.83
0.7~1
0.86~1.3
1.1~1.6
1.4~2.1
1.8~2.5
2.2~3.3
2.8~4
3.2~5.2
4.5~6.3
5.5~8.3
7~10
8.6~13
11~16
14~21
18~27
25~35
30~45
Type Setting Range(A) Applied Contactor
JR29-85
(T85)
6~10 B65
B85
8~14
12~20
17~29
25~40
35~55
45~70
60~100
JR29-105
(T105)
27~42 B105
36~52
45~63
57~82
70~105
80~115
JR29-170
(T170)
90~130 B170
100~160
140~200
JR29-250
(T250)
100~160 B250
160~250
250~400
JR29-370
(T370)
100~160 B370
160~250
250~400
310~500

Dimensioned
t16
t25
t45
t85
t105
t170
t250
t370

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